The emergence of big data and cloud technology has driven a fast development of wireless sensor networks (WSNs) [1-4]. A sensor node is normally comprised of one or more sensor units, a power supply unit, a data processing unit, data storage, and a data transmission unit [5]. A wireless sensor network is a collection of wireless nodes with limited energy that may be mobile or stationary and are located randomly in a dynamically changing environment. Wireless sensor networks hold the promise of revolutionizing the way we observe and interact with the physical world in a wide range of application domains such as environmental sensing, habitat monitoring and tracking, military defence, etc. [6]. A variety of disciplines uses the WSNs for numerous applications like monitoring of specific features or targets especially in rescue and surveillance applications, medical, engineering and industrial applications and many more. As they are easy to handle because of the small size and is of affordable cost the use of such sensors became common. Besides that they can be deployed in areas like underground, underwater or the normal landscape which made it more feasible. Now a day's everywhere we can see the surveillance equipments which are deployed with sensors. Smart home environments are yet another application. Lot many applications in medical field use WSNs like patient monitoring. Target tracking and war zones extensively rely on these. The characteristics of low-cost, low multifunctional sensor have attracted a great deal of research attention, in that sensor nodes can perform intelligent cooperative tasks under stringent constrains @ IJTSRD |